How to scale complex icons?

Question

iOS

I export graphics for ios, with simple icons everything is clear - I increase it by 2 and 3 times. What about complex graphics? For example, a green button with a yellow arrow on it? And these are two shapes. Merging them into 1 will not work, you first have to make copies in @2x and @3x, then rasterize, glue layers and export. But this is too hemorrhoid, is there another way?

Answer 1

Another way is an icon font.
For example generator: ruseller.com/service.php?rub=22&id=2597
Tutorial: www.webdesignmagazine.ru/code/custom-icomoon-font-...

Answer 2

use a vector image.
Tutorial: martiancraft.com/blog/2014/09/vector-images-xcode6

Answer 3

svg - if the color of the elements should be different
font - if the color of the elements should be the same

Answer 4

Plugin for Xcode - one click cuts all sizes from @3x
https://github.com/rickytan/RTImageAssets